Name of the Vulnerable Software and Affected Versions: tableflip versions prior to 1.2.2

Description: The issue affects processes using tableflip, potentially causing hung goroutines in the parent process after a failed upgrade. This occurs due to the Go runtime's behavior with O NONBLOCK, specifically when exec.Cmd.Start() is called, leading to the disabling of the runtime poller and the clearing of O NONBLOCK from the underlying file descriptor. As a result, goroutines relying on deadlines or interruption via Close() may become stuck in read or accept-like syscalls. Although this problem is considered rare and has not been experienced in production, it can still cause issues.

Recommendations: For versions prior to 1.2.2, update to version 1.2.2 to resolve the issue.